article: A Chinese couple forced their 4- year- old son to run naked  during a snowstorm with the temperature dipping to -13degC in New York, where they were enjoying a holiday.
  The boy's father calls himself "Eagle Dad". He says he follows the parenting style of eagles, which are known to push their babies off cliffs so that they learn to fly by themselves.
  Different people have different ideas about it. Some people think it is proper to do like "Eagle Dad". The 4- year- old boy, Duoduo, was weak since he was born, so his father tried to help him train to keep strong. But others disagree, they think we should concentrate more on the best ways to teach children in these fast changing times.
  Different families use different methods to teach children, but all of them should be allowed by the law. Parents should pay full attention to children's physical and metal conditions, and make sure the ways can help their children think and act positively.
  As long as parents know this, they can use different methods to educate children. Every child has different character. Some children grow up to be success under the guidance of (......)"eagle dads" or "tiger moms". Others are also successful growing up under more considerate elders.
question: Duoduo was made to  _  on a snowy day.
options: stay at home exercise jump from a cliff go to school